Coating or inking device



Nov. 27, 19-23. 1,47 7

F. A. cbBB comma 0R INKING DEVICE .Filed Feb. 15 1922 mmummuurm Dmvmrolr I Freeman A. 6066.

Patented Nov, 27, 1923.

UNITED STATES PATENT OFFICE.

FREEMAN A. COBB, OF WILMINGTON, DELAWARE, ASSIGNOR, BY MESNEASSIGNMENTS,

'I'O NATIONAL VULCANIZED FIBRE 00., OF WILMINGTON, DELAWARE, A CORPORA-TION OF DELAWARE.

COATING OR INKING DEVICE.

Application filed February 15, 1922. Serial No.'536,681.

To all whom it away concern:

Be it known that I, FREEMAN A. Cone, a citizen of the United States, anda resident of Wilmington, county of New Castle, and State of Delaware,have invented certain new and useful Improvements in Coating or InkingDevices, of which the following is a specification.

Some of the objects of the present invention are to provide an improvedmechanism for applying a liquid coating to sheets of fibre or any othermaterial; to provide means for coating an embossed surface fordecorating purposes; to'provide means for uniformly applying a liquidcoating to a design embossed on fibre or other material; to provide aliquid coating device for sheets of material arranged to distribute onan applying roll a coating corresponding in length to the length of therespective sheets of material; to provide means for preventing a blurredor heavier coated portion while applying a liquid coating to a sheet ofmaterial; to provide means controlled by the length of a sheet ofmaterial for periodically applying a coating to an applying or engravedroll; and to provide other improvements as will hereinafter appear.

In the accompanying drawings, Fig. 1 represents a sectional elevation ofa printing attachmentfor rolls embodying one form of the presentinvention; and Fig. 2 represents a perspective of one end of the machineshown in Fig. 1.

Referring to the drawings, one form. of the present invention is shownas applied to an embossing machine comprising generally a main frame 10,a bed roll 11, and an embossing printing roll 12, the two rolls 11 and12 having parallel axes arranged so that the two operate in surfacecontact, and being driven by anyv suitable power transmitting means,which it is believed unnecessary to here describe or illustrate. Theroll 12, in accordance with the present invention, may be of anysuitable type for applying ink or anyother coating to amaterial passedbetween the rolls 11 and 12, but in the present construction it isillustrated by way of example as an embossing rollIhaving an ornamentaldesign 13 negatively arranged upon its peripheral surface whereby suchdesign is pressed into the surface of a fibre sheet 14 in positive formas such material traverses the said rolls.

arranged to be driven by a chain 22 from the main driven shaft 28, whilethe roll 17 is either of the idle or gear-driven type to serve as asuitable support. Suitable rigid spaced plates 24 serve as a guidepassage for the material from the rolls 16 and 17 to the proper deliverylocation between the roll 12 and the bed roll 11.

For the purpose of applying ink or other coating to the surface of theroll 12, a transfer roll 25 is provided having a length substantiallythat of the roll 12 and keyed or otherwise made fast to a spindle 26which is supported at its ends in a pair of links 27 in such a mannerthat the roll 25 normally contacts with the surface of the roll 12 andalso with one of a pair of coating conveying rolls 28 and 30. Theserolls 28 and 30 are rotatably supported in surface contact and rotateunder the action of a coating applying roll 31 which'is fixed to adriven shaft 32 so mounted as to hold the roll 31 in surface contactwith the roll 30 and also partially submerged in the coating material 33in its reservoir 34. Power is preferably transmitted to the shaft 32 bya chain '35 from a counter-shaft 36, which is driven bya chain 37 fromthe main driven shaft 23. It will be understood that the foregoing powertransmitting means is only by way of example and may be variouslyarranged and constructed to carry out the desired function.

In the application of coating in the form of ornamentation or designsand more particularly in embossing work, such as embossing and coatingfibre to produce colored or other distinctive designs, it has been foundthat while the roll 12 has a continuous imposed surface of coatingmaterial the length of material to be coated is often such that only aportion of the coating carried by the roll 12 is applied thereto. Inother words,

a sheet of material contacts with and leaves the roll 12 before theentire circumference of that roll has come into contact with it andconsequently, before the next sheet of material reaches the roll 12, aportion of the coated surface has travelled beyond the line ofapplication and returns to the transfer roll where it receives anothercoating. The result is the coated surface approaching another sheet ofmaterial is not of uniform thickness as one portion has a doubleapplication of the coating, and when applied to the sheet of materialgives a very undesirable appearance, namely, one finished uniformportion and another portion contrastingly heavier or blurred.

For the purpose of overcoming and preventing the foregoing, one form ofthe present invention consists in providing means for periodicallybringing the transfer roll 25-into contact with the roll 12 for apredetermined time dependent upon the lengths of the material sheetsbeing fed through the machine. In the present con- 1 struct ion thetransfer roll links 27 have a pivotal connection. with the roll 28 sothat the transfer roll is free to swing concentrically with respect tothe roll 28 towards and away from the roll 12. Normally the trans ferroll 25 is maintained out of contact with the roll 12 by means of a pairof levers 40 pivoted differentially at 41 to a fixed part and havingtheir long arms connected respectively by links 42 with the ends of thespindle 26. The short arms of the levers 40 connect respectively withdepending arms 43 which carry'between them, at their lower ends,

the shaft 18 of the feed roll 16. The shaft 18 is guided by andmaintained properly positioned by bifurcated extensions 44 of thebracket 21. V In the present arrangement the weight of the roll 16 andits associated parts in connection with the apportioned levers 40 issufficient to slightly overbalance the roll 25 and its parts,andconsequently when there is no materialbetween the rolls 16 and 17,the transfer roll 25 will be held out of contact with the roll 12, thatis, in non-inking position. Thus, the aforesaid construction functionsto hold the transfer roll 25 in position to apply ink or other coatingto the roll 12 only as long as there is a sheet of material passingbetween the feed rolls 16 and 17, and it therefore becomes impossiblefor any portionof the roll 12.

to receive superposed coatings. This funct on1ng, however, 1S dependentupon the relative positions of the feeding and applying rolls 16 and 12.with respect to the circumferential location of the transfer roll 25, as

"without such predetermined relative arrangeinent either a portion ofthe sheet will be uncoated or the coated part of the roll the centerline 47 of theroll 12 and transfer roll. 25. It thereforefollows thatthe roll 12 is always coated sufficiently to cover the length of thefibre sheet being fed to the machine. 1

It will now be apparent that a complete unitary structure has beendevised for applying a coating, in the form ofan ink,

a coloring medium or any-other liquid, to

sheets of material in a uniform manner for finishing, decorating, or anyother surface treating conditions. Furthermore, by the present inventionthe coating of unevensurfaces, such as embossed designs on fibre orother material, can be accomplished without the formation of blurred andirregular portions, and insuring an even disposal of the coatingnotwithstanding depressions or raised parts as a part of the design.thermore, the. time of application of the coating is directly controlledby the length of the sheet so that it is immaterial whether short orlong lengths of thematerial are fed to the machine.

claim:

1. In a coating machine, the combination of. a supply of coating, aroll. for applying Fur Having thus, described .my invention, I

said coating to a length of, material, means for uniformly distributing,said coating upon said roll, a device for feeding said material intocontact with said roll, and means operated by said feeding device forcontrolling said distributing means.

2. In a coating mechanism, thecOmbinationof a supply of coating,.a .rollfor applying said coating to a length of material, means for uniformlydistributing said coating upon said roll, a device for feeding said.

material into contact with said roll, and means controlled by saidfeeding device-for periodically rendering said distributing meansinoperative. l

3. In a coacting machine, the combination of a supply of coating, a.roll for applying said coating to a length of material, a transfer rollarranged to receive coating from said supply and mounted for movementinto and out of contact with said applying roll, to uniformly distributecoating on said applying roll, and means located in the path of materialfed. .to said applying roll for normally holding said transfer roll outof cont-act with said applying roll, said means being arranged to beactuated by said material to hold said transfer roll in contact withsaid applying roll for a predetermined time.

4. In a coating machine, the combination of a supply of coating, a rollfor applying said coating to a length of material, a transfer rollarranged to receive coating from said supply and mounted for movementinto and out of contact with said applying roll to uniformly distributecoating on said applying roll, and means for causing said transfer rollto be held in contact with said applying roll only long enough to applya circumferential coating having a length equal to the length of a sheetof material to be coated.

5. In a coating machine, the combination of a roll for applying coatingto a sheet of fibre, means for uniformly distributing said coating uponsaid roll, and means for causing said distributing means to operate onlylong enough to apply a circumferential coating having a length equal tothe length of said sheet of material. A

6. In a coating machine, the combination of a supply of coating, anembossing roll for applying said coating to a sheet of fibre, means foruniformly distributing said coating upon said roll said distributingmeans being located a predetermined circumferential distance from themeeting line of said material and said roll, and means, having a partarranged to contact with said sheet at a point removed from said meetingline a linear distance substantially equal. to said predeterminedcircumferential distance, for causing said distributing means to applycoating to said embossing roll while said material is in contact withsaid part.

7. In an inking or coating machine for vulcanized fibre, the combinationof two fixed rolls arranged to rotate in contact with each other, meansfor distributing coating upon one of said rolls, and means for causingsaid distributing means to apply a length of coating to said roll equalto the length of material to be coated.

8. In an inking or coating machine for vulcanized fibre, the combinationof a bed roll, a printing roll mounted to contact therewith, an inkingroll for distributing ink upon said printing roll, and means operated bymaterial being fed to said printing roll, for moving and holding saidinking roll in contact with said printing roll, said moving means beingarranged to be automatically released when said material passes out ofcontact therewith.

Signed at Wilmington, in the county of New Castle, and State ofDelaware, this 9th day of February, 1922.

' FREEMAN A. COBB.

